Preheat a grill pan over medium-high heat. Lightly toast 1 tortilla in the pan about 20 seconds, flip, and cook 10 seconds longer. Set aside on a plate and cover with a slightly damp paper towel. Repeat with the remaining tortillas.

Melt the margarine in a large nonstick skillet over medium heat. Pour in the eggs, egg whites, and cheese. Cook, stirring, for 2 minutes. Add the greens. Continue cooking, stirring, for about 1 minute longer, or until the eggs are set and the greens are wilted.

Mound one-quarter of the mixture on the bottom half of 1 tortilla, add one-quarter of the sliced avocado, flap up the 2 sides, and roll into a tube. Repeat with remaining tortillas and filling. Cut the wraps diagonally in half and serve with hot-pepper sauce, if desired.

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